/*
 * Copyright (c) 2017 RockScript.io.
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package io.rockscript.engine.job;

import java.time.Instant;
import java.time.temporal.TemporalAmount;
import java.util.ArrayList;
import java.util.List;

/** JobService data structure to maintain jobs and when
 * they should be executed. */
public class Job {

  String id;
  JobHandler jobHandler;
  Instant executionTime;
  RetryPolicy retryPolicy;
  List<JobRun> jobRuns;

  public Job() {
  }

  public Job(String id, JobHandler jobHandler, Instant executionTime, RetryPolicy retryPolicy) {
    this.id = id;
    this.executionTime = executionTime;
    this.jobHandler = jobHandler;
    this.retryPolicy = retryPolicy;
  }

  public Instant getExecutionTime() {
    return executionTime;
  }

  public void setExecutionTime(Instant executionTime) {
    this.executionTime = executionTime;
  }

  public void setId(String id) {
    this.id = id;
  }

  public String getId() {
    return id;
  }

  public JobHandler getJobHandler() {
    return jobHandler;
  }

  public List<JobRun> getJobRuns() {
    return jobRuns;
  }

  public void setJobRuns(List<JobRun> jobRuns) {
    this.jobRuns = jobRuns;
  }

  public long getErrorCount() {
    return jobRuns!=null ? jobRuns.stream().filter(j->j.hasError()).count() : 0;
  }

  public void addJobRun(JobRun jobRun) {
    if (jobRuns==null) {
      jobRuns = new ArrayList<>();
    }
    jobRuns.add(jobRun);
  }

  public TemporalAmount getNextRetryDuration() {
    return retryPolicy!=null && !retryPolicy.isEmpty()? retryPolicy.removeFirst() : null;
  }
}
